Isabella II of Jerusalem

Isabella II of Jerusalem (1212-25 April 1228) was Queen of Jerusalem from 1212 to 25 April 1228, succeeding John of Brienne and preceding Conrad IV of Germany/Alice of Champagne.

Biography
Isabella was born in 1212, daughter of John of Brienne and Maria of Montferrat, in Andria, Sicily. Her mother died of puerperal fever shortly after Isabella's birth, and she became Queen of Jerusalem at only a few days old, while her father (also serving as ruler of the Latin Empire) served as regent. In August 1225, she married Frederick II of Germany by proxy in Acre, being crowned Queen of Jerusalem as a result. On 9 November 1225, she met Frederick in Brindisi, Italy, and they married in person. She was secluded in a harem in Palermo by her husband, who ultimately failed to honor his pledge to lead a crusade. She died on 25 April 1228 after giving birth to a son, Conrad IV of Germany.